Storage unit



FIG. 1 is a front perspective view of an inventive storage unit;

FIG. 2 is a back perspective view thereof;

FIG. 3 is an front elevational view thereof;

FIG. 4 is an right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a storage unit, as shown and described. 